-The Mesozoic to Eocene sedimentary succession of Hazara Basin dominated by carbonates is characterized by a distinct package of sediments punctuated by a number of diastems, hiatus and unconformities. The Hazara Basin evolved in Hettangian with the development of lagoonal to upper shoreface conditions on the northern margin of northward flying India. It was followed by a thick pile of middle J...

Introduction: After the initial proposal of Contact 1 and 2 [1], previously published papers about ocean on Mars can basically be divided in two groups. The first one was based on shorelines theory, however, shorelines were unfortunately not found in required amount. Papers from the second group, discussing basically whether Contact 1 or 2 is better approach, proposed as indicators for ocean on...

Sitting at ∼5,000 m water depth on the Congo-Angola margin and ∼760 km offshore of the West African coast, the recent lobe complex of the Congo deep-sea fan receives large amounts of fluvial sediments (3-5% organic carbon). This organic-rich sedimentation area harbors habitats with chemosynthetic communities similar to those of cold seeps. In this study, we investigated relative abundance, dive...

The Gold King Mine spill in August 2015 released 11 million liters of metal-rich mine waste to the Animas River watershed, an area that has been previously exposed to historical mining activity spanning more than a century. Although adsorption onto fluvial sediments was responsible for rapid immobilization of a significant fraction of the spill-associated metals, patterns of longer-term mobilit...

Classically, the grain size of soil and sediment samples is determined by the sieve method for the coarse fractions and by the pipette method, based on the ‘Stokes’ sedimentation rates, for the fine fractions. Results from the two methods are compared with results from laser diffraction size analysis, which is based on the forward scattering of monochromatic coherent light. From a point of view...

The distribution, scale, and engineering geological characteristics of riverbed overburden have become one the key issues in construction water conservancy hydropower projects southwest China. In this study, we summarize discuss (variation thickness) distribution geogenic (formation) mechanisms associated rivers. This was done by compiling thickness data from constructed planned dams. results s...

Continuous seismic records near river channels can be used to quantify the energy induced by river sediment transport. During the 2011 typhoon season, we deployed a seismic array along the Chishan River in the mountain area of southern Taiwan, where there is strong variability in water discharge and high sedimentation rates. We observe hysteresis in the high-frequency (5-15 Hz) seismic noise le...

s:Lee, K.M.; Ogston, A.S.; Nittrouer, C.A. Export and Retention of Fine-Grained Sediment on theIntertidal Complex of a Small Mountainous River: Skagit River Tidal Flats. AGU ChapmanConference on Source to Sink Systems Around the World and Through Time. Oxnard, CA. 24 Jan2011.Nowacki, D.J. and Ogston, A.S. Multiple scales of controls on sediment transport in intertidal flats:...

Palynological analysis of pollen, Pteridophyta spores and algae deposited in the superficial sediments at Lagoa de Cima and Lagoa do Campelo Lakes, located in the north of Rio de Janeiro state, was used to determine the spatial variation of the palynomorphs deposition. A total of 67 pollen types were identified at Lagoa de Cima, with an expressive contribution of regional arboreous taxa, hydrop...

Introduction: This investigation focused on Warrego Valles, a region of well-developed valley systems located in Thaumasia Planum of the southern highlands at ~42°S, 267°E. Some previous workers interpreted the valley systems in this area as being of fluvial origin [1-3], while others focused on sapping [4-6] or hydrothermal activity [7-10] as formative mechanisms. It is clear that no single mo...